57358261 has 2 divisors, whose sum is σ = 57358262. Its totient is φ = 57358260.

The previous prime is 57358253. The next prime is 57358319. The reversal of 57358261 is 16285375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57304900 + 53361 = 7570^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 57358261 - 2³ = 57358253 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57358261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57358061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28679130 + 28679131.

It is an arithmetic number, because the mean of its divisors is an integer number (28679131).

Almost surely, 2^57358261 is an apocalyptic number.

It is an amenable number.

57358261 is a deficient number, since it is larger than the sum of its proper divisors (1).

57358261 is an equidigital number, since it uses as much as digits as its factorization.

57358261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 57358261 is about 7573.5236845210. The cubic root of 57358261 is about 385.6547267304.

The spelling of 57358261 in words is "fifty-seven million, three hundred fifty-eight thousand, two hundred sixty-one".